Apparatus for use in sampling gas for analysis



G. V. BAILEY APPARATUS FOR USE IN SAMPLING GAS FOR ANALYSIS Filed Aug. 20. 1921 2 Sheets-$heet 1 c. BAILEY APPARATUS FORUSE IN SAMPLING GAS FOR ANALYSIS Filed Aug. 20, 1921 2 Sheets-Sheet 2 "I INVENTDR (ZVWW$ BY ATTORNEYS Patented July 22, 1924.

CAMERON VERNON BAILEY, on NEW YORK, n. Y.

APPARATUS FOR USE IN SAI/IPLING GAS FOR ANALYSIS.

Application filed August 20, 1921.

To all whom it may concern:

Be it known that I, CAMERON V. BAILEY, a subject of the Kingdom of Great Britain, residing at New York, county and State of New York, have made a certain new and useful Invention in Apparatus for Use in Sampling Gas for Analysis, of which the following is a specification.

This invention relates to apparatus for use in collecting and holding samples of gas, and for transferring samples of the gas for analyzing and other purposes. 1

The object of the invention is to provide an appliance of the nature referred to which is simple in structure and eflicient in operation, and wherein the gas to be sampled and analyzed is collected and maintained without danger of dilution or losses.

A further object of the invention is to provide an apparatus of the nature referred to wherein samples of the collected and retained gas to be analyzed may be easily and efficiently drawn off for analyzing purposes without danger of dilution or loss.

Other objectsof the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location, and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawings, and finally pointed out in the appended claims.

Referring to the accompanying drawings,

Fig. l is a view in elevation, slightly perspective, showing a gas collecting and retaining appliance embodying the principles of my invention.

Figs. 2, 8, 4-, 5, 6, 7, and 8 are views in elevation of the appliance illustrating the manner of use thereof in collecting and retaining the gas and drawing off samples therefrom for analyzing purposes.

The same part is designated by the same reference numeral wherever it occurs throughout the several views.

In collecting and retaining gases, and drawing 011' samples from the retaining container for analyzing purposes, the danger is incurred of the gases becoming diluted by mixture with air, which dilution, of course,

impairs the value of the analysis made thereof. It is among the special purposes of my present invention to provide an apparatus which is simple and efhcient, and wherein provision is made for collecting and re- Serial No. 493,841.

vthis respect I do not desire to be limited or restricted, into which is positioned and securely cemented, or otherwise secured, the vessels 11, 12, the former constituting what I will call the gas container, and into which the gas to be sampled and analyzed is collected and retained until drawn off therefrom for analyzing purposes, and the latter of which I will call a reservoir. These vessels communicate with each other at their lower ends through a small opening indicated at 13. The upper end of the reservoir is formed with a freely open inverted funnel-shaped mouth indicated at 14. The upper end of the container 11 is tapered off into a capillary tube 15, which is connected to a socket 16, in which is mounted a threeway stop cook 17. The passages in the stop cock control communication respectively between the capillary tube 15 and a nozzle extension 18 of the socket 16, and between said nozzle and a capillary tube 19 which is connected to the socket 16, which extends to a point over the inverted funnel-shaped mouth 14 of the container 12.

Before using the apparatus the vessels 11., 12, and connections 15, 16, 18 and 19, but particularlv the gas container 11, should be flushed out, and I have found a one per cent solution of sulphuric acid suitable for this purpose.

In the use of'the apparatus the vessels 11, 12, are half filled with mercury. Before delivering the gas to be collected for analysis, or other purposes, into the gas container 11, it is desirable to eliminate from said gas container and the capillary tube 15, nozzle 18, and the passage through the socket 16, and stop cock which opens communication between the tube 15 and nozzle 18, any air contained therein. To accomplish this, the apparatus is tilted into the position shown in Fig. 2 after the stop has been manipulated to open the passage from the container 11, through the tube 15, the socket 16 and stop cock therein and nozzle 18, until the mercury in the container drops through the nozzle. The stop cock is then manipulated to cut 05 communication between the nozzle the influence of atmospheric pressure from the column of mercury contained in the reservoir 12. When the liquid used to preliminarily flush out the container is eliminated preparatory to receiving the gas to be sampled,a minute quantity of the flushing material may remain adhering to the inner surface of the container. This adhering liquid is advantageous for the reason that the acid content thereof serves as a preserva tive for the gas, and the water content serves to saturate the same, more or less, with water vapor. A suitable tube or other con nection 20', see- Fig. 1, communicating with a source of supply of thegas to be collected, is connected to the free end of the nozzle 18. The stop cock is then manipulated to open the passage through the nozzle 18 and tube 19, and the gas is forced through the 0011- nection 20, nozzle 18, socket 16, stop cock and capillary tube19, finally escaping at the free end of said tube 19. This is to secure the elimination of all atmospheric air from these parts. The stop cock is then manipulated so as to again open communication between the nozzle 18 and the capillary tube 15 and container 10, and the apparatus is tilted rearwardly, thereby causing the tainer 10 to descend in said container until said column levels with the column of the mercury contained in the reservoir 12. This action causes the gas to beanalyzed to be. drawn into the container 10 above the upper end of the column of mercury contained therein. The stop cock isthen manipulated to cut off communication between the capillary tube 15 and nozzle 18,.thereby trapping 'in the container the gas supplied thereto 7 from the source. When the appliance is again restored to vertical position, as shown in Fig. 5, the column ofmercury 1n. the reservoir is raised therein, and hence the gas is retained within the container 11 under pressure. A gas burette 20, see Fig. '6, is then connected to the nozzle 18, and the stop cock is manipulated so as to open communication between the tube 19 and the nozzle 18. The mercury contained in the burette 'is then forced through this communication,

thereby expelling therefrom any air con-- tamed therein. The stop cock is then manipulatedto cut off communication be- "tween the tube 19 and nozzle 18, and to open communication between the capillary tube 15 and nozzle 18, as shown in Fig. 7. Thereupon. the mercury falls in the burette'QO,

and a sample of the gas is drawn into the burette from the container 11. The stop cock is then again manipulated to shut off communication between the nozzle 18 and capillary tube 15, see Fig. 8, and the burette containing the sample of gas for analyzing, or other purposes, with its supply of gas sample, retained in said burette by means of its own stop cock 21. The device is then disconnected, and the gas analyzing operation is carried out in the usual or any well known or convenient manner with respect to the sample of gas drawn off in the burette.

It will be observed that in the apparatus I have shown and described there is no waste of gas supplied to the container vessel 11 after the gas is supplied thereto, and the drawing off of the first sample leaves an ample supply in said container for several other samples to be drawn off therefrom for analyzing purposes before again filling the container with a further supply. Thus I am enabled .to collect and preserve gases for considerable periods of time, say for weeks, without leakage or danger of contamination.

From the foregoing description it will be seen that I provide an exceedingly simple, sturdy, rugged structure, for receiving and storing the gas to be analyzed, and from which samples of the gas for analysis, or other purposes, may be readily, easily, and conveniently drawn off, and I avoid entirely the danger of dilutionof the gas during the collecting and drawing off operations. column of mercury contained in the gas con- While I have shown and described a specific structure as an illustrative embodiment of my invention, and the best form in which I at present contemplate carrying the same into practice, I do not desire in the broad scope ofmy invention as defined in the claims to be limited or restrictedtothe exact details shown and described.

But having now set forth the objects and nature of my invention, and a construction other purposes, a gas container and a reservoir communicating with each other, said reservoir having a mouth and being open to the atmosphere at one end thereof, and the gas container terminating at one end in a capillarytube, in combination with a socket having a nozzle, and means controllingcommunication between said nozzle and capillary tube and means to deliver from said control means to said mouth ofthe reservoir. 2. An apparatus for collecting and holding gas and from which samples of gas may bedrawn oif'for analyzing or' other purposes, consisting of a gas retaining vessel and a reservoir vessel, said vessels being in communication with each other at their lower ends and adapted to contain a suit able liquid, the upper end of the reservoir being open to the atmosphere, the upper end of the gas retaining vessel terminating in a capillary tube, a nozzle, and means to control the communication between said nozzle and capillary tube and means to deliver to the open end of the reservoir.

3. An apparatus for collecting and holding gas and from which samples of the gas may be drawn off for analyzing or other purposes, consisting of a gas retaining vessel and a reservoir vessel, said vessels being in communication with each other at their lower ends and adapted to contain a suitable liquid, the upper end of the reservoir being open to the atmosphere, the upper end of the gas retaining vessel terminating in a capillary tube, a nozzle, a capillary tube delivering over the open mouth of the reservoir, and means to control the communication between said nozzle and said capillary tubes respectively.

l. An apparatus for collecting and hold ing gas and from which samples of the gas may be drawn off for analyzing or other purposes, consisting of a gas retaining vessel and a reservoir vessel, said vessels being in communication with each other at their lower ends and adapted to contain a suitable liquid, the upper end of the reservoir being open to the atmosphere, the upper end of the gas retaining vessel terminating in a capillary tube, a socket member to which said capillary tube is connected, a second capillary tube connected to said socket member and terminating over the open mouth of the reservoir, a nozzle also connected to said socket member, and a suitable cock operated in said socket member to control the communication between said nozzle and capillary tubes respectively.

5. In an apparatus of the class described, a gas'retainer vessel and a reservoir vessel communicating with each other and adapted to contain a liquid, the upper end of the reservoir having an inverted funnel-shaped mouth freely open, the upper end of the gas retainer vessel having a capillary tube, a socket member to which said tube is connected, a capillary tube connected to said socket member and terminating over the in verted funnel-shaped mouth of the reservoir, a nozzle connected to said socket mem ber, and a suitable cock operating in said socket member to control the communications between said nozzle and said capillary tubes respectively.

In testimony whereof I have hereunto set my hand on this 16th day of August, A. D.

CAMERON VERNON BAILEY. 

